85513556 has 6 divisors (see below), whose sum is σ = 149648730. Its totient is φ = 42756776.

The previous prime is 85513513. The next prime is 85513567. The reversal of 85513556 is 65531558.

It can be written as a sum of positive squares in only one way, i.e., 69989956 + 15523600 = 8366^2 + 3940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10689191 + ... + 10689198.

It is an arithmetic number, because the mean of its divisors is an integer number (24941455).

Almost surely, 2^85513556 is an apocalyptic number.

It is an amenable number.

85513556 is a deficient number, since it is larger than the sum of its proper divisors (64135174).

85513556 is a wasteful number, since it uses less digits than its factorization.

85513556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21378393 (or 21378391 counting only the distinct ones).

The product of its digits is 90000, while the sum is 38.

The square root of 85513556 is about 9247.3539999288. The cubic root of 85513556 is about 440.5666871912.

The spelling of 85513556 in words is "eighty-five million, five hundred thirteen thousand, five hundred fifty-six".